Large Deviation Principles for Stochastic Volatility Models with Reflection

We introduce and study time-inhomogeneous stochastic volatility models with reflection. In such models, the volatility is described by a nonnegative time-dependent function of a reflecting diffusion. The main results obtained in the present paper are sample path and small-noise large deviation princ...

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Veröffentlicht in:Applied mathematics & optimization 2023-10, Vol.88 (2), p.44, Article 44
1. Verfasser: Gulisashvili, Archil
Format: Artikel
Sprache:eng
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Zusammenfassung:We introduce and study time-inhomogeneous stochastic volatility models with reflection. In such models, the volatility is described by a nonnegative time-dependent function of a reflecting diffusion. The main results obtained in the present paper are sample path and small-noise large deviation principles for the log-price process in a model with reflection under rather mild restrictions. We use these results to study the asymptotic behavior of binary barrier options and call prices in the small-noise regime.
ISSN:0095-4616
1432-0606
DOI:10.1007/s00245-023-10021-5